Type-writer.



PATENTED NOV. 19, 1907.

W. A. LORENZ.

TYPE WRITER.

APPLICATION FILED SEPT. 11, 1906.

3 SHEETS-SHEET 1.

III .gm t

. WITNESSES:

: f a INVENTOI? Y'" Z4414 ATTORNEYS PATBNTED NOV. 19, 1907.

W. A. LORENZ.

TYPE WRITER.

APPLICATION FILED SBPT.11,1905.

' 3 SHEETS-SHEET 2.

WITNESSES:

3] a AIM/EH70}? Br ATTORNEYS PATENTED NOV. 19, 1907. W. A. LORENZ.

TYPE WRITER.

APPLIOATION FILED SEPT-11,1905.

3 SHEETS-SHEET 8.

E In at) I: m w [1.

WITNESSES.

w a Kl EH70 CO I ATTORNEYS UNITED STATES PATENT OFFICE.

. WILLIAM A. LORENZ, OF HARTFORD, CONNECTICUT, ASSIGNOR TO PARKERMACHINE COMPANY, OF BUFFALO; NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITER.

Specification of Letters Patent.

Patented Nov. 19, 1907.

Application filed September 11. 1905- Serial No- 277.916-

To all whom it may concern:

Be it known that I, WILLIAM A. LORENZ, residing at Hartford, in thecounty of Hart ford and State of Connecticut, have invented certain new"and useful Improvements in Ty e-Writers, of which the following is a fulclear, and exact description, such as will enable others skilled in theart to which it a pertains to make and use the same.

his invention relates to t pewriting machines and the like and, w ilecapable of 7 employment in many forms of machines, is

F so

" especially adapted for use in those known as silent typewriters.

Ithas for one of its objects the provision of mechanismdesigned tosubstantially eliminate noise during theoperation of the machine.

'Another obj ect is to provide'means whereby the t pe-actuating devicesmay be easily adjuste toward or from the platen and firmly fixed inposition aftersuch ment.

Another object is to provide an efiective stop for the key levers suchthat movement "thereof may be arrested without impact or concussion and,therefore, noiselessly.

The above and other advantages are secured in constructions of thenature of that hereinafter pointed out. p

The invention accordinglyconsists in the features of construction,combinations of elements and the arrangement of parts which;

.will be exem lified in the mechanism hereinafter descri ed, and thescope of the ap lication of which will be indicated in the ollowingclaims.

- In the accompanying drawings, wherein areshown several of the variouspossible embodiments of my invention, Figure 1 is an elevation partlydiagrammatic and partly in section, of my preferred embodiment of thesame. .Fi 2 is a vertical sectional View of a modifie form of bracketadjusting means. Fi 3 is a view similar to Fig. 1 of another embodimentof my invention.

Fi 41is an elevation showing a different embod 1 ment of the mechanismfor arresting the movement of the ke levers. Fi 5 is a view similar ,toFig. 4 ut showing t e parts in another position. 1 Similar referencecharacters refer to simiailjust lar parts throughout the several viewsof the drawings.

Preliminary to a description of the specific features of my invention,it may here be noted that, in machines of this type, especially thosewherein the printing is accomphshed by pressure without impact orconcussion, it IS necessary to adjust the ty e actuating mechanismtoward or from the platen of the machine, in order that the type maybebrought to a uniform printing position and, further, it is essentialthat the several parts be securel held in osition alilter ad ustment. Asa ove indicated, in t e whic. will operate in all respects withoutnoise, means should be provided to arrest as silently as possible themovements of the key levers at the end of their strokes. In theaccomplishment of the above urposes, I have, therefore foundit' desirabe to provide a bracket easily adjusted with res ect to the laten, and soconstructed as to e capable 0 being secured in a rigid position afteradjustment.

I have also found it desirable to arran e stops for the key levers orother movab e mechanism, whereby motion ma be arrested without impact orconcussion, t us substantially eliminating the: disagreeable noiseprevalent during the operation of machines,

of other types. The above and .other advantages are secured inconstructions of the nature of that hereinafter described.

Referrin now to the drawings, there'is shown in ig. 1 a bracket 1 havinga projecting milled shank 2 extending into an opening 'in the frame A ofthe machine, which shank is provided with an opening 3 in the endthereof, the walls of which areermit a movement of said.

ro uction of a machine of this type,

designed to carry the type actuatin devices such that the same may bethat by a rotation of screw 6, bracket 1 may be forced from frame A, theextent of suc' \move'ment being determined by the positib'n of adjustingscrew 4' in shank 2, the move '5 ment being limited by the engagement ofthe head of the adjusting screw 4 with said frame. .Either of screws 4or 6 may therefore, operate as adjusting screw s, the remaining one insuch instances operating as a 1 clamping element and, as the directionof force exerted bysaid'screws isdiametrically opposed to each other,bracket 1 is held ma fixed position upon the tightening thereof.

B indicates broadly the type actuatingmechanism not specificallydescribed herein,

as the same forms no part of my present invention, certain features ofwhich are shown described and claimed in an application, Serial No.274,650 filed by Charles W. Sponsel August 18, 1905.

A type bar '8 sliding upon the bed or table C of the machine and havinga pivotal connection with the type actuating devices B, by means of link9, is adapted to be projected 25, toward or from the platen 10 by keylever 1 1 journaled upon rod 12 positioned in the frame of the machine,which key lever 11;

has a pivotal connection with the actuating devices B by means ofconnecting rod 13. It

will be understood, of course, that key lever 11 is one of a set orseries, the others being similarly constructed and have been omitted inthe interest of clearness of illustration.

' Key lever 11 is, held in its upward position against a cushion 14 bymeans of spring connected thereto at 16,,andat 17 to a fixed part of themachine, and is provided with a swinging arm 18 piv'oted at 19to saidkey lever, the upper end of which has suitably journaled thereon aroller 20, Roller20 is adapted topperate upon one member or tooth of anadjustable bar or comb '21 extending transversely of the machine, and

over the entire set or series of key levers. This bar is carried uponthe upper ends of adjusting screws, as shown in the drawings, saidadjustin screws being threaded into lugs extende from the frame of themachine. Bar or comb '21 is provided with. a

plurality of projecting alined teeth and is adjustable by means ofadjusting screws 22, and between adjacent teeth '23, swinging arm 18 isadapted to operate during the movement of roller 20 over the exteriorsurface of one of said teeth. Arm 18 is normally drawn toward keylever11 by means of a spring 24 connected at 25 to arm 18 and at 26 tokeylever 11,. -Although from the above descriptionthe operation of this em,

bodiment of m invention should be largely obvious,fit wi l heunderstood. that by a roper nanipulation of screws 4 and 6, racketfl maybe adjusted'to determine the proper; position of type bar 8 with respectto amass the platen 10. 'I he downward stroke of key lever 11 willcompel arm 18 to swing to the right until the axis of roller 20, is invertical alinement with pivot 19, thus limiting the stroke of lever 11,springs 15 and 24 operat ing to interpose a yielding resistance to suchstroke.

At the end of the stroke of key lever 11., spring l5.returns the same toits upward 1 position and, during this upward movement",

spring 24 draws arm 18 toward lever 11 andw 3 thus maintainsa constantengagement be tween roller 20 and the (Jo-acting tooth of bar or comb21.

In Fig. 2 I have shown aslightly modified 1' form of bracket adjustingmeans, in that bracket 1 is adjusted with respect to the.

platen by adjusting screw 27 threaded, into the frame of the machine andhaving engagement with the end of shank 2.

threaded into'bracket 1 at 29 and serves to bind the same againstadjusting screw 27.

. In the embodiment shown in Fi 3, bracket 1 is adjustable with respectto. g 10 by adjusting screw 30- threade into frame A' and engaging withbracket 1 at 31,

Binding screw 28"exten'ding through the frame is.

te/ f.

and a set screw'32 extending through frame A operates to bind shank 2,thereby maintaimng .bracketl in a fixed position. In Y this embodiment,I have provided a sliding block 33 pivoted upon swinging arm 18 in placeof roller 20, as shown in Fig. 1, the 0 eration being in all respectssubstantial y similar to that above described.

In Figs. 4 and 5, I have shown a different arrangement of the .key leverarresting mechanism. In this embodiment, I have positioned upon a shaft34 journaled in the ame of the machine, a wiper cam 35, which extendsunderand supports the entire set or series of key levers and is held inoperative position, as shown in Fig. 4, by means of firing 36 connectedto arm 37 at 38 and to a ed partof the machine at 39. J To an arm 40secured to shaft 34 there is pivoted a rod. 41, which, inturn, ispivoted to arm 42positioned u on a rock shaft 43 ournaled in the that,upon a downward stroke of said ke lever, cam 35 will be rocked andduring sue 1 movement will slide alon said curved 'periphery, the strokeof key le restedwhen the positionshown in Fig. 5 is reached, [and duringthis movement rock shaft 43, through its connection with wiper cam 35will have been operated, as heretofore explained. Upon thereleasing-of'pres ver 11 being arabove t sure from key lever 11, springoperates to return the same to its original position against cushion 14,andspring 36 maintains a con- -stant engagement between wiper cam 35 andsaid key lever.

Accordingly, it will be seen that I have devised mechanism well adaptedto accomplish the objects of my invention and one, while simple in form,is characterized by great efiiciency, the several arts operating to(produce a substantially silent operation, an the advantages herein setforth, are mherent in all'the embodiments shown.

' While in this, illustrative I have shown my invention in connectionwith machines of the e, I do not wish to be understood as being, imited,to use in machines of such type, as it is adapted as, to many of itsfeatures to machines of other types, although peculiarly. advantageousin the relation shown-.. D

As many changes could be made 111 the above construction and manyapparently widely different embodiments of my mvention:could be madewithout departing from the scope thereof, I intend that all mattercontained in the above description or shown in the accompanying drawingsshall be inter-' preted as illustrative and not in a limiting sense.

Having described my invention, what I claim as new and desire to secureby Letters Patentis:

1. In a typewriting machine, in combination, a platen, a bracket adaptedto carry the printing devices, a shank upon said bracket and extendinginto the frame of the I "the machine, means for adjusting said bracketwith respect tothe platen, and means operating upon said shank to fastensaid 'bracket in position after adjustment.

2.. In a typewriting machine, in combination, aplaten, a bracket ada tedto carry printing devices, a shank upon said bracket and extending intothe frame of the 'machine, means for adjusting said bracket with respectto the platen, and screw threaded means operating upon said shank tofasten said bracket in position after adjustment. 3. In a typewritingmachine, in combination, a .p1aten,a bracket adapted to carry theprinting devices, a shank u onsaid bracket extending into the frame 0the machine, screw threaded means operating in the frame of the machinefor adjusting said bracket with respect to the platen, and a clampingscrew operating upon said shank to fasten fsaid bracket in positionafter adjustment.

4. In a typewriting machine, in combination, a platen, a bracket adaptedto carry the printing devices, said bracket being provided with a shankextending into the frame of the machine, means extending through tendingadjusting screw engaging said shank and .the frame of the machine andengaging said bracket to adjust the same with respect to the 1platen,and means operating in said shan adapted to clamp sai bracket againstsuch adjusting means.

extending into the frame of the machine,

means for adjustin said bracket toward the laten, and means or adjustingsaid bracket, om the platen, either of said adjusting means beingcapable of operation to clamp said bracket in an adjusted osition.

7. In a typewriting mac ine, in combination, a platen, a bracket adaptedto carry the rinting devices and having a shank exten 'ng intothe frameof the machine, means operatm in said shank for adjusting said bracketom the platen, and means for adjusting said bracket toward the platen,

either of said adjusting means being capable ofoperation to clamp saidbracket in an adjusted position.

8. In a typewriting machine, in combination, a platen, a type bar, abracket, type actuating devices carried by said bracket and connected'with said type bar, said bracket being provided with a shankexinto theframe of the machine, an

ada ted to adjust the bracket with respect to t e platen, and a clampingscrew adapted to engage said bracket to clamp the same against movementafter adjustment.

9. In a typewriting machine, in combination, a platen, a type bar, typeactuating devices connected with said type bar, a bracket ada ted tocarry said type actuating devices, said bracket being provided with amilled shank extending into the frame of the machine, means co-actingwith said shank for adjusting the bracket from the platen, and meansacting directly upon said bracket adapted to clamp the same inanadjusted position, said adjusting means and said clampingmeans beingcapable of a reverse operation, whereby said first mentioned meansoperates to permit an adjustment of said bracket toward the platen'andsaid' second-mentioned means operates to adjust the same and to clampthe bracket in said adjusted position.- j

10. 'In'a typewriting machine, in combisaid clamping screw being capableof a re.-

ver'se operation whereby said first-mentioned adjusting screw may beoperated to permit a movement of the bracket toward the platen, saidclamping screw operating to adjust the bracket and'also to clamp thesame in an adjusted iosition.

11. In a typewriting machine, in combination, a platen, a type bar,means adapted to actuate said type bar, a key lever con nected with saidactuating means, a fixed stop for said key lever disposed above, the

Y same, and means interposed between said key lever and said fixed stopadapted to interpose ayielding resistance to the stroke of said keylever.

12. In a typewriting machine, in combination, a platen, a type bar,means adapted to actuate said. type bar, a key lever connected with saidactuating means, a fixed stop for said key lever arranged above thesame, means interposed between said'key lever and said fixed stopadapted to interpose a yielding resistance and ultimately to arrest thestroke of said key lever, and a spring connected with saidlast-mentioned means adapted to oppose a movement thereof.

13. In a typewriting machine, in combination, platen, type bar, meansadapted to actuate said type bar, a key lever 0011- nected with saidactuating means, a fixed stop for said key lever disposed above the sava swinging member adapted to move rr vely to said type bar and suchrelative mo vement to interpose a yielding resistance to the movementthereof, saidswinging member acting in conjunction withsaid fixed stopto interpose a yielding resistance to the troke of said key leverandalso operating 0 arrest the movement thereof.

14; In a typev riting machine, in combinatian, a key lever, a fixed stoparranged above the same, and means pivoted to said key lever and movingalong said fixed stop adapted to limit the stroke of said key lever.

15. In a typewriting machine, in combination, a key lever, a fixed stoparranged above the same, and swinging means pivoted to said key leverand moving along said fixed stop adapted to furnish a yieldingresistance and ultimately to arrest the stroke of said key lever.

16. Ina typewriting machine, in combinaamass tion, a key lever, a fixedstop arranged above the same, means connected to said key lever Iposition, and a cushioned stop adapted to silently arrest such returningmovement.

18. In a typewriting machine, in combination, a pivoted key lever, afixed stop arranged above the saine, movable means connecting said keylever with said fixed stop, and meanscarried by said connecting meansadapted tomove over said fixed stop upon a stroke of said key lever,said fixed stop being adapted to operate throu h the medium of saidconnectingmeansto imit the stroke of said key lever.

1 9. In a typewriting machine, in combination, a key lever, anadjustable bar arranged over the'same, and means attached to said keylever and operating upon said fixed bar and movable along said bar uponastroke of said key lever, said means being adapted to interpose aresistance to the movement of said key lever and ultimately ,to arrestthe movement thereof.

20. In a typewriting machine, in combination, a key lever, afixed bararranged above the same and a swinging member pivotally attached to saidkey lever and operating upon said fixed bar upon a stroke of said keylever, said swingingmember being adapted to interpose a resistance tothe movement of said key lever and ultimately. to arrest the movementthereof.

21. In a typewriting machine, in, combination, a key lever, a fixed bararranged above the same, a swinging member pivotally attached to said kelever and adapted to 0perate upon said xed bar'upon a stroke of said keylever, said swinging member being adapted to interpose resistance to thestroke of said key lever and ultimately arrest the movement thereof, anda spring connecting said key lever and said swinging member adapted toresist a movement of the same with respect to said fixed bar.

22. In a typewriting machine, in combina-' tion, a key lever, anadjustable fixed'bar arranged above the same, a swin ing member pivotedto said key lever, a roller rotatably mounted upon said swinging memberand adapted to operate upon said fixed bar upon a stroke of said keylever, .saidswinging member being adapted to interpose resist ance tothe movement of said ke lever and ultimately arrest the movement tereof, and

amass :5

a spring connecting said key lever and said the same in oppositedirections thereto, said tion with t e t pe-carrying members of a.

bracket adapte justable fixed bar.

swmgm? member adapted to resist a move- I members bein adapted to clampthe bracket ment 0 the same with respect to said ad- I against the ot1er member after adjustment.

' In testimony whereof I affix my signature, 23. In a t pewritingmachine, in combinain the presence of two witnesses.

WILLIAM A. LORENZ.

Witnesses:

JANETTE S. ELLSWORTH, CAROLINE M. BRECKLE.

to support the same, said I Bracket bein seated upon the frame of themachine, ant a'pair of opposed members i engaging said bracket andadapted to move

